august 1945, president truman's decision to use an atomic bomb against japan. tonight we'll examine the process of making a tough decision. we'll hear about major decisions on an international stage, about corporate decisions, and personal ones. from taking down the most wanted man in the world -- >> the president turned to us and said, i made my decision. we are going to go with the raid. write up the orders. >> -- to giving up a dream career. >> it was this sense of almost unreality, of just -- i'm not sure i know who i am. >> to uprooting a company culture. >> some people actually quit. >> to opening the door to a closed society. >> this is like a spy thriller. >> absolutely. >> each of my guests has wrestled with a difficult choice. they will take us through their deliberations, their fears, and how they made their tough decisions. >>> at 11:00 p.m. on may 1, 2011 00:21 20111, two blackhawks, a translator and a dog named cairo took off from jalalabad, afghanistan, to kill osama bin laden. >> the death of bin laden mark it is most significant achievement to